Control device for automatic transmission
First Claim
1. A control device for an automatic transmission capable of operating in an automatic shift mode in which a gear ratio is automatically selected based on driving conditions of a vehicle, and also capable of operating in a manual shift mode in which the gear ratio is changed based on an upshift command or a downshift command by manual operation of a manual operation device, the control device comprising:
- a manual shift control unit that changes and sets the gear ratio after downshift depending on road conditions when the downshift command has been operated by the manual operation device in the manual shift mode, and performs the downshift to the gear ratio that has been changed and set.
1 Assignment
0 Petitions
Accused Products
Abstract
A control device for an automatic transmission capable of operating in an automatic shift mode in which a gear ratio is automatically selected based on driving conditions of a vehicle, and also capable of operating in a manual shift mode in which the gear ratio is changed based on an upshift command or a downshift command by manual operation of a manual operation device, the control device includes a manual shift control unit that changes and sets the gear ratio after downshift depending on road conditions when the downshift command has been operated by the manual operation device in the manual shift mode, and performs the downshift to the gear ratio that has been changed and set.
31 Citations
20 Claims
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1. A control device for an automatic transmission capable of operating in an automatic shift mode in which a gear ratio is automatically selected based on driving conditions of a vehicle, and also capable of operating in a manual shift mode in which the gear ratio is changed based on an upshift command or a downshift command by manual operation of a manual operation device, the control device comprising:
a manual shift control unit that changes and sets the gear ratio after downshift depending on road conditions when the downshift command has been operated by the manual operation device in the manual shift mode, and performs the downshift to the gear ratio that has been changed and set. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of operating an automatic transmission capable of operating in an automatic shift mode in which a gear ratio is automatically selected based on driving conditions of a vehicle, and also capable of operating in a manual shift mode in which the gear ratio is changed based on an upshift command or a downshift command by manual operation of a manual operation device, the method comprising:
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determining whether the downshift command has been operated by the manual operation device in the manual shift mode; changing and setting the gear ratio after downshift depending on road conditions when the downshift command has been operated by the manual operation device in the manual shift mode; and performing the downshift to the gear ratio that has been changed and set. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. An automatic transmission system comprising:
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an automatic transmission capable of operating in an automatic shift mode in which a gear ratio is automatically selected based on driving conditions of a vehicle, and also capable of operating in a manual shift mode in which the gear ratio is changed based on an upshift command or a downshift command by manual operation of a manual operation device; and a manual shift control unit that changes and sets a gear ratio after downshift depending on road conditions when the downshift command has been operated by the manual operation device in the manual shift mode, and performs the downshift to the gear ratio that has been changed and set.
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Specification